Answer:
The celestial poles are imaginary lines that trace the Earth's rotation axis in space. ... Because of this, constellations and stars close to the celestial poles, such as the Big Dipper, can be used to estimate time during the night.
Explanation:
The answer is D. Optimal
Hope this helps:)
Answer:
The highest magnification commonly used with the electron microscope is 200,000X. The 4x objective lens has the lowest power.
Explanation:
The depth of focus is greatest on the lowest power objective and the longest one is the lens with the greatest power.